diff --git a/src/lwp/process.c b/src/lwp/process.c
index 06f4266303..8cbeb74c06 100644
--- a/src/lwp/process.c
+++ b/src/lwp/process.c
@@ -98,7 +98,7 @@ returnto(savearea)
 # else
 #  define LWP_SP JB_SP
 # endif
-#elif	defined(AFS_HPUX_ENV)
+#elif	defined(AFS_HPUX_ENV) || defined(AFS_PARISC_LINUX24_ENV)
 #define	LWP_SP	1
 #elif	defined(AFS_LINUX20_ENV)
 #if defined(AFS_PPC_LINUX20_ENV) || defined(AFS_PPC64_LINUX20_ENV)